Ingest IoT cold-chain temperature telemetry from a Sensitech or Emerson Connect Plus logger via API and detect excursions in real time

Steps

1. Authenticate with the Sensitech TempTale Cloud API or Emerson Connect Plus API using API key in the Authorization header; retrieve the list of active loggers associated with your shipment batch
2. Subscribe to or poll the telemetry endpoint for each logger device ID; each reading includes a device ID, timestamp in UTC, temperature value in degrees Celsius, humidity if equipped, and a sequence number for gap detection
3. Apply your product-specific temperature limits (e.g. 2-8°C for refrigerated pharmaceuticals, -25°C to -15°C for frozen) as configurable alert thresholds per shipment lane; store thresholds with the shipment record not globally
4. On each telemetry ingest, compare the reading against the applicable threshold; if outside range, record an excursion start event with the reading timestamp, device ID, and temperature value; continue tracking until the reading returns within range to capture excursion duration
5. Calculate the cumulative out-of-range duration for each excursion event; compare against the product's Maximum Permissible Excursion (MPE) from the product master; trigger a chain-of-custody hold event and notify QA if MPE is breached
6. Log every telemetry reading immutably with ingestion timestamp, logger sequence number, and calculated status (IN_RANGE, EXCURSION); use sequence number gaps to detect missed readings and raise a data-gap alert